Factory Pro Velocity stacks

[Tapemonkey]

Hi All, here's a few pics if the mods I've made to the intake system of my 2006 SVS.

First was the usual tank raisers.

https://imagizer.imageshack.com/v2/419x314q90/r/922/xkazbP.jpg

Next was swapping to a SV1000 airbox snorkal.

https://imagizer.imageshack.com/v2/301x314q90/r/924/bgGFOU.jpg

Next is the K&N air filter

https://imagizer.imageshack.com/v2/313x314q90/r/924/yxtK6p.jpg

Lastly the factory pro velicity stacks.

https://imagizer.imageshack.com/v2/354x314q90/r/924/LmvWg4.jpg

https://imagizer.imageshack.com/v2/346x314q90/r/922/bCaTIl.jpg

All together it gives a really nice angry, intake roar.

Initially I just removed the original snorkal and that was just loud.

The addition of the SV1000 snorkal gives a more aggressive 'tuned' sound if that makes sense.

[Dave20046]

Interesting , thanks for posting

Have you noticed much of a difference?
Where did you buy them?

[Craig380]

They're from Factory Pro in the US: http://www.factorypro.com/Prod_Pages/prods59,SV650,03-12.html

According to Factory Pro the 35mm & 70mm stack combination in Tapemonkey's pics give a power & torque boost (about 3bhp / 3ft-lb) in the mid-range, and a small increase at the top end without losing anything elsewhere.

There's a thread on SVRider at the moment about using the stock Suzuki stacks from the Gladius in the SV airbox. They fit straight in (ideally the holes in the SV airbox should be widened by a couple of mm but it's not essential).

I've got some curved Suzuki stacks from a 2010 V-Strom on the way to me and I'll be posting about them when I've got them fitted (hopefully this weekend). Only cost me £20 so worth having a play with.

In general, longer stacks are supposed to be better for mid-range (in the 4,000 - 7,000 rpm region) while shorter stacks are best for top-end power. The V-Strom stacks are about 75mm in length.

[Bibio]

RANT mode...

its all marketing american twaddle.

lets take the swingarm marker plates i used to make. everyone on this forum that had a pointy at the time and could afford them bought them without question as they knew the benefits. now take the same items and try to sell them on svrider.. none nada nobody wanted them... how strange.. the reason is that i never went into a bullcarp speech and sales pitch about how they gave 1000bhp due to having the chain aligned properly and that the chain would last longer than the bike. instead i told the truth. i sold 100's of pairs on this forum and never had one single return or complaint about them as they done the job they were designed to do but because i never mentioned that they did actually increase the BHP and increase chain life i sold none on svrider.... that tells you something my friends.

dont even get me started on those fekin TRE rip off things.

[Craig380]

It's true that making sure the rear sprocket is aligned and the chain is properly lubed will free up more BHP than most intake / exhaust mods will make :)

It is interesting that the Gladius uses different-length stacks as standard, and the V-Strom has equal-length long stacks from the factory. Of course the Strom also has different cam profiles too, and the inlet is probably tweaked to suit, but I'll report back on how mine goes with the Strom stacks installed.

[R1ffR4ff]

RANT mode...

its all marketing american twaddle.

lets take the swingarm marker plates i used to make. everyone on this forum that had a pointy at the time and could afford them bought them without question as they knew the benefits. now take the same items and try to sell them on svrider.. none nada nobody wanted them... how strange.. the reason is that i never went into a bullcarp speech and sales pitch about how they gave 1000bhp due to having the chain aligned properly and that the chain would last longer than the bike. instead i told the truth. i sold 100's of pairs on this forum and never had one single return or complaint about them as they done the job they were designed to do but because i never mentioned that they did actually increase the BHP and increase chain life i sold none on svrider.... that tells you something my friends.

dont even get me started on those fekin TRE rip off things.

+10.

The best two performance enhancers if you are carrying too much weight are Diet and Exercise.I'm still fighting to get/keep my weight down<grin> :)

[squirrel_hunter]

RANT mode...

its all marketing american twaddle.

lets take the swingarm marker plates i used to make. everyone on this forum that had a pointy at the time and could afford them bought them without question as they knew the benefits. now take the same items and try to sell them on svrider.. none nada nobody wanted them... how strange.. the reason is that i never went into a bullcarp speech and sales pitch about how they gave 1000bhp due to having the chain aligned properly and that the chain would last longer than the bike. instead i told the truth. i sold 100's of pairs on this forum and never had one single return or complaint about them as they done the job they were designed to do but because i never mentioned that they did actually increase the BHP and increase chain life i sold none on svrider.... that tells you something my friends.

dont even get me started on those fekin TRE rip off things.

Are you saying that changing the velocity stacks as described in the original post does not work?

[Bibio]

no, i'm saying its all marketing clap trap to part you with your hard earned on something that might make a difference as there are far too many variables to say it will.

[R1ffR4ff]

no, i'm saying its all marketing clap trap to part you with your hard earned on something that might make a difference as there are far too many variables to say it will.

Totally agree Bib.

Also is there such a thing as a,"Velocity Stack"?They are just metal tubes after all ;-)

Don't get me wrong.I like the sound they can induce and at some point might fit some for this reason but in the full knowledge that they may or may not change the performance of the engine for better or worse.

The fuel systems on Motorcycles were not designed on the back of a beer-mat but by highly paid,experienced and knowledgeable engineers using design and test equipment we can only dream off plus test tracks we will most likely never ride.

The system is a semi-enclosed cyclic one so any change to the Air-input may well affect the power band at different revs/loads and may need the adjustment or changing of other components to compensate to keep the optimal fuel-to-air ratio under varying conditions.

This is the same principle when I fitted a Slip-on exhaust end.I didn't do it for any changes in power and hoped I wouldn't have to adjust or change anything else.I did it for cosmetic reasons including that I wanted a louder exhaust.

Luckily I made a good choice and it didn't affect the fuel system at all.Power delivery is excellent and my Spark plugs have been a perfect,"Tan" colour for over a year since the swap.

My 10 penn'th :thumbsup:

[maviczap]

The only way to tell if these mods work, is to have the bike on a Dyno and see if they make any difference once fitted.

[Bibio]

The only way to tell if these mods work, is to have the bike on a Dyno and see if they make any difference once fitted.

completely agree but then you wasting more money :thumright:

[Craig380]

These arrived this morning, so I'll get them fitted at the weekend and see what I think. They're the stock airbox inlet rubbers from a 2010 V-Strom:

https://i.ebayimg.com/images/g/aJ8AAOSw1ZBUsV28/s-l1600.jpg

[Craig380]

I fitted the DL stacks. It was straightforward apart from about 15 minutes of wiggling, tugging and twisting to get them mounted properly: I inserted them up and through from the underside of the airbox. A trace of red rubber grease and a bit of swearing helped.

I did about 250 miles over the weekend, and the difference is noticeable. The throttle response and pick-up in the 3,000 - 7,500rpm is sharper and stronger, especially in the first half of the twistgrip movement. A couple of times I was behind cars that were travelling at a steady 65 - 70, cruising on a light throttle, and when I gave it a little tweak of the grip to overtake being sure I must be in 5th because of the ease which I punched past them ... only to find I was actually in 6th all along.

They suit my riding style, as I hardly ever go over 8,500/9,000rpm and very rarely use more than half throttle (the bike is standard with standard gearing etc apart from a SV1000 airbox snorkel and the new stacks).

They're definitely staying in.